Furnace wall



i Patented A ug. 5, 1930 l JAMES C. H BBS, OF PAINESYILLE, 02H10l *FUaN'AcE WALL Application led. January My present invention relates td improvements in furnace walls and will be best understood from the following description and the annexed drawings, in whichvFig. 1 is 5 a horizontal sectionthrough thewall, partly broken away, and Fig. 2 is a front elevation of the same.

l In the illustrative embodiment, thejfurnace wall is built up ofthe usual refractory brick or tile 8 having substantially parallel sides, in any of theusual manners, as, for instance, in horizontal courses, as illustrated. Preferably, there -will be no bond between the v courses, the friction between the courses being sufficient to hold the courses in place. At intervals along'each horizontal course, at-as f many places as may be desired, the adjacent A tile are spaced apart so as to leave an o enving 9 between them with the portion o the .20 space 9 on the side of the wall away from the n. furnace bonded with mortar or cement 10, for, however, only ashort distance in from the outer face of the tile. The exterior of the wall is covered with any suitable plastic inl sulatin'g material 7, this plastic material being held between the casing plates 6 and the buckstays 5, the. casing 6 being heldagainsty thebuckstays in the usual manner.

When such a wall is used in a furnace, the radiant heat which enters the spaces 9 is revented from reaching the exterior face 0 the wall by reason of the presence of the bonding material 10. Moreover, these spaces are soon filled with an accumulation of light lash which, while fillingv the spaces, will yield A and therefore permit the motion of the tile .tending to close the spaces.' I may also apply a thin coating l1 of clay cement over the inner or furnace sideof the-tile 8 and across the spaces 9 when the wall is first built.V B cement I mean an plastic material whic will adhere tothe ti e and by clay cement, I mean a clayV which may be applied in plas- -tic form and which will'a'dhere tothe tile 45 '5160" the usual furnace wall, much'trouble when applied. This thin coating 11 will be .Worn away after a short time by the abra-l 8,1923. serial no. 80,111.

frequently arises with refractory materials that compose the walls, due to expansionand contraction. Such walls are usually continuous from` end to end, so, that small expansions and contractions, due to temperature changes, will cause destructive movements of the wall. Also highertemperatures on `the inside of Ifurnace side of such walls cause an arching which produces a r tendency for the' middle portion oftheswall to move inwardly toward the heat. By the arrangement which I have described, these' ditliculties are obviated, since it will be clear that the tile may expand laterally on its fur. nace side without causing the wall to buckle because of the presence of thespaces 9. /On the other hand, the outer faces of the tile are relatively cool and willtherefore not expand materially and consequently the bonding' material 10 may be used to hold the tile fixedly in position in the wall. words, I have provided a wall of tile arranged so .that each tile is held iixedly in position in In other the wall and yet the furnace side of the tile,

which is subjected to the greatest expansion, is free to "expand without causing a buckling of the wall.V At the same'time, by the closure of the rear or outer ends of the spaces-9, no,

heat or gases can escape from the'furnace. 1I claim: v

41. `A furnacewall comprisinga plurality of courses of refractory blocks, with at least pne pair of tile in each coursefspaced apart, `-a bonding material in said space and only at one end thereof, whereby said air of tile is free toy expand toward each ot er at one face but not at the opposite face of the wall, yand a thin layer of clay cement over the other endof the space.

y 2. A furnace Wall comprising a'plurality of courses of refractory blocks, with at least one pair of tile in; each course spaced apart, means sealing said space at the outer end thereof, Y and the space near the inner end thereof being covere'drwith a thin layer. of cement.

3,' A furnace wall comprising a plurality of refractory 'blocks-having substantially parall I el sidesand laid in courses, somepf thealdf l )acentti f each' course being'spacedapart, means 'seaing said space atthe outer' end thereof, and a thin layer of cement covering the inner end of the space.

4. A furnace wall comprising a plurality of horizontall disposed courses of tile having substantia 1y parallel sides` certain tile in each course being' spaced apart to form vertically extending spaces there-between, means securing the tile 'in position adjacent their outer portions and sealing said spaces, and a thin layer of cement over the inner ends of said spaces.

' JAMES C., HOBBS. 

